violent gang engaged in organized crime, usually the yakuza

stern, grave, forbidding; dignified, stately / strict, unforgiving / tight, close, without gaps / harsh, tough, extreme, severe, hard to withstand (said of natural phenomena)

(rare, archaic) wondrous, miraculous, splendid, sublime / (rare, archaic) dignified, solemn, stern, noble, refined / (rare, archaic) beautiful, pretty

the way in which something is tightly packed or close together without gaps

area, district, particular geographic region

surveillance

to observe, to monitor, to supervise

Short for 警察署 (keisatsusho, “police station”). / police

activity, work, operation

to act, to operate, to work